Improved Low Cost Triple CRT Driver CORPORATION CVA2411TX FEATURES • • • • • DESCRIPTION Ease of Use Small Heat Sink OSD Option EMI Control Option Excellent Gray Scale Linearity APPLICATIONS • CRT Displays for 1280 x 1024 Resolution with Pixel Clock Frequency up to 160MHz The CVA2411TX is an improved low cost version that features excellent gray scale linearity with no crossover distortion and less EMI for 64KHz (horizontal scanning frequency) monitors. The CVA2411TX can be used with pre-amplifiers where the common emitter transistor is part of the pre-amp. With this device, OSD, peaking coil, and peaking capacitor can be available. A very small heat sink is required to pick-up ground from the standard TO220 package Tab. With 65MHz bandwidth, the device is an ideal low cost solution for 14", 15" and 17" monitors. ORDERING INFORMATION Part Package Temperature CVA2411TX T11A -20oC to +100oC CONNECTION DIAGRAM AND SIMPLIFIED SCHEMATIC 11 9 VCC 11 VC C 10 VOUT COLLECTOR 8 COLLECTOR 3,6,9 EMITTER 7 EMITTER VOUT 6 COLLECTOR 2,5,10 5 VOUT 4 EMITTER 3 COLLECTOR 2 1 VBIAS Q3 1 VOUT VBIAS EMITTER 4,7,8 TAB 1H-39 TAB = GND TOP VIEW T11A PACKAGE 1B-17 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CVA2411TX CORPORATION ABSOLUTE MAXIMUM RATINGS Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95V Storage Temperature . . . . . . . . . . . . . . . . . . . -25oC to +100oC Operating Temperature . . . . . . . . . . . . . . . . . -20oC to +100oC Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300oC DC ELECTRICAL CHARACTERISTICS TCASE = +25oC SYMBOL CHARACTERISTICS MIN TYP MAX UNITS BVCEO Collector-Emitter Breakdown Voltage (I c = 1mA) 95 V BVCBO Collector-Base Breakdown Voltage (Ic = 100µA) 100 V BVEBO Emitter-Base Breakdown Voltage (IE = 100µA) 3 V HFE DC Current Gain (Ic = 35mA) 30 50 V VBES 0.95 VCES 0.3 VBE(ON) 0.6 ICEO 100 nA MAX UNITS AC ELECTRICAL CHARACTERISTICS TCASE = +25oC SYMBOL CHARACTERISTCS MIN TYP Cob Output Capacitance 3 pF Ccb Junction Capacitance 2 pF Cib Input Capacitance 8 pF ft Current Gain Bandwidth Product (Ic = 35mA) 150 MHz FIGURE 1. TYPICAL CHARACTERISTICS RISE TIME FALL TIME 102.5V 10V/DIV 10V/DIV 102.5V 2.5V 2.5V 10ns/DIV 1J-8 10ns/DIV 1J-9 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 C2 120pF C2 120pF C2 120pF R4 56Ω 120Ω R13 R4 56Ω 120Ω R13 R4 56Ω 120Ω R1 100Ω Q1 2N3904 R1 100Ω Q1 2N3904 R1 100Ω Q1 2N3904 R2 33Ω DC bias circuit at the output is an example from several DC bias circuits available. Output Peaking inductor is approx. (220nH to 680nH). C1 120pF R3 56Ω 33Ω R2 C1 120pF R3 56Ω 33Ω R2 C1 120pF R3 56Ω Gain = R5 R1 Overshoot affects the EMI, try to reduce overshoot as much as possible by adjusting R3, C1. R3, C1 network will adjust the overshoot. R4, C2 network will adjust the undershoot. NOTES: B-INPUT G-INPUT R-INPUT R13 1.5KΩ 3W R5 1.5KΩ 3W R5 1.5KΩ 3W R5 12V 47 9 8 7 6 4 3 C3 .01µF C6 100µF TAB (HEAT SINK) 11 10 5 2 1 CVA2411TX 80V C7 33µF R7 2.2µF 2.2µF C8 .1µF FDH400 D1 C4 5.6KΩ R7 FDH400 D1 C4 5.6KΩ R7 FDH400 D1 2.2µF C4 5.6KΩ D2 FDH400 D2 FDH400 D2 FDH400 R14 1.5KΩ R8 10KΩ R8 10KΩ R8 10KΩ C5 .1µF C5 .1µF C5 .1µF R10 1.5KΩ Q2 2N3904 R8 1.5KΩ R10 1.5KΩ Q2 2N3904 R9 1.5KΩ R10 1.5KΩ Q2 2N3904 R9 1.5KΩ 330nH L1 820Ω R11 330nH L1 820Ω R11 330nH L1 820Ω R11 47Ω R12 47Ω R12 47Ω R12 1H-40 B-OUTPUT G-OUTPUT R-OUTPUT CVA2411TX CORPORATION FIGURE 2. APPLICATION CIRCUIT CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CVA2411TX CORPORATION Information furnished by Calogic is believed to be accurate and reliable. However, no responsibility is assumed for its use: nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Calogic. CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025